Consolidated Statements of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (5,174)	$ 18,034	$ (10,179)	$ 6,428
Other comprehensive (loss) income:
Unrealized loss on available for sale securities	0	(10)	0	(5)
Foreign currency translation adjustment	914	(672)	785	(913)
Other comprehensive (loss) income	914	(682)	785	(918)
Comprehensive (loss) income	$ (4,260)	$ 17,352	$ (9,394)	$ 5,510